Internal-combustion engine



51 7; 1930. A..M NIVEN V .I;764;745

ETERNAL COMBUSTION ENGINE Original Fil ed Dec. 16, 1927 a INVENTOR. 1496/Vfi/hP/l/9/1 Mus/v ATTORNEY.

Patented June 17, 1930 UNI TED STATES PAT ENTIOFFICBY ARCHIE MAcrHAIt NIVEN', or nn'rRoI'r, 'iurcniemnnss enon "ro "a e-Trawler; Morons commun on, or DETROIT, mcnrean, A oonronnrrolvforgvinemm INTERNAL-COMBUSTION ENGINE Original application filed -December 16, 1927, Serial 2N0. 240,377; Divided and this application filed September 9, .1328.

v This invention relates: to internalcombustion engines and refers more particularly to improved means for the distribution and circulation oft-he cooling water. A further feature of the invention resides in facilitatingwthe casting operations of ,the engine cylinderblock." i My invention is primarily adapted for use in sleeve valve enginesof various types but may also be used to advantage in other types of engines. 7 '1 It is desirable especially in sleeve valve engines to provide a flow of the cooling water in the cylinder Water jacket upwardas the exhaust side and across the cylinder heads to a discharge conduit or header generally located along the oppositeside of the engine. t is desirable'to provide for the elimination ofsteam pockets in the cylinder water jacket at points remote from the cylinder jacket outlet to the cylinder water jacket this being customarily done by boring small holes through the cylinder top Wall. Such construction offers a decided disadvantagej,'

however, since difficulty necessarily is experienced 1n coring the cylinder water acket in. the portions thereof remote from the cylinder Waterjacket outlet. One object of my invention residesin providing relatively large openings in the cylinder block top Wall not only; at the cylinder jacket outlet but also at points remote therefrom whereby thet water jacket top wall is provided with ample openings for support of cylinder water jacket cores, the general coringoperations of thecylinder block being thereby facilitated. In the engine assembly such of the core openings as are not desirable from the standpo nt of proper water circulatlon are closed off, myf1nvention providing for conveniently attaining this end through .the

cooperationtof the cylinder heads.

A further feature of my invention resides for conveniently regulating the amount of cooling water from the cylinder acketto the cylinder head jackets in proportion to the proximity of the cylinder headsito thewater circulating pump, 7 Thus, by varyingtheeffective opening area between the cylinder of steam pockets aforesaid ly mainly along one side ofthe engine such Serial No. 391,125. L

jacketand the was cylinder an jacke s attain this end that I employin facilitating the cylinder jacket coring and'the prevention Further objects of my invention reside in the particular combinationfand arrangement v. .7 and simplic ty to utllize the same means to Of "parts as hereinafter]described land C a a The EtPPllCiLillOILlS a d vision of my co- December 16,1927. L j j a 1 In the drawings in which. like reference ch aracters represent corresponding parts,

pending application SerialNo. 240,377, filed 1 is a sectionalplan view of the engine looking' downwardlyflon the cylinder heads, 1' 9 1 Fig. 2 is asectionalong2-2ofEigh 1, and I i l i l 1" I Fig. 3 is a section along 3-3 of Fig.1

Referring to thedrawings, reference char- A acter A represents the 1 cylinder-block cast ing having-a plurality of cylinderslO accommodating one or p more sleeve valves 11 having intake and exhaustports 12 and13 respectively cooperating with cylinderintakeand exhaust ports l lrand 15, and:cylinder intake and exhaustpassages 16and ,17. The cylinder block A is jacketed at 18 for receiving Water circulated around the various cylinders 10 by asuitablepump 18 having a water inlet 19?. The. top Avallg20 of the "cylinder block is provided. 1 along onefside, preferably the exhaust side; with openings 21 adjacentthe cylinderheads 22, These cylinder headstmay have ajacket extending into 7 the respective cylinders, being spaced therefrom to accommodate the sleeve valves and seated on the cylinder block top Wall 20 by a flange 24.1 Studs 25 serve to secure the cylinder heads in position. 1 Above the side having'opcnings 21, are other relativel largef openings 29 through the Wall hesef hpening's facilitating support ng the cylinderja'cket "eer e and generally assisting the casting operation as will be mi d ily understood. At the same time these openings cooperate as hereinafter described with the cylinder heads for preventing the formation of steam. pockets in the cylinder jacket: To this end the cylinder head flanges 24 fol the most part cover the openings 29', a relatively small portion of such openings being uncovered such as the portion m terinedia te adjacent cylinder heads. The portions 30 While preventing steam pockets in the cylinderjacket xvi11 net materiallyeffeet the desired main fi'o'tv 0t Water upward ly from thec ylinder jacket 18 through openings 21 "along theeXl'i'aust side-of the engine anda rdss the cylinder heads into jackets 23 and thence to theoiitlet conduit or h'eader 31 along the intake side of the engine. Thus the exhaust passages 17 are maintained in a tooled condition. If desired the cylinder heads 22 may beprovided with deflecting means for circulating tlie" Water doivnt'vardly into the j acket 23 during its travel across the cylinder heads this being no feature of this ini ention. A'dditional epen'ings 32 through Wall. 20 may be provided intermediare "adjacent cylinders; these openings like wise assistiiigfin the casting operating of. the cylinder. block and beingIikeXX'i'se for the most part covered the flanges 2 1 of the cylinder heads, leaving a relatively small effective teasing 33 for preventing steam pocket formations in the cylinderjacket in the vicinity of such points; At the engine center Where the usual central relatively "Wide crank-shah bearing usually requires a greater spacing Between the central pair of cylinders than between other adjacent cylinders, a smaller openingee may be provided instead of eit'tending the flanges 'o'f adj acent 'cyliiider' headste cover a larger 'openi'i'i'g, thereby avoiding the necessity-for a cylinder head having afiange differing from others used inu eengi e. I

Wher e the piiinp 19 is located at the end of the cylinder block as illustrated, Imay extend the cylinder head flanges 2d fer those cylinders neares't'the pump so as to overlie 'a'portion' of theopenings 21 and thereby reuse the effective area or these openings. The remainingfcylindeis more "remote from the pump dc nae have their eminder-head flanges e tended-over the "opening 21.; If desired this variation 'efiect'ive area'for theopenings 21 my he graduated for each in a six cylinder engine as illustrated, the

otherthree cylinders having the openings 21 relatively restricted the same amount,

This facilitates manufacture of the cylinder heads,- By reason of the graduation in the effective areas of the openings 21 substantially the same quantity of Water will cir cul'ate through each cylinder head of the engine, insuring substantially the samev cooling for'th'e cylinder heads remote from the pump as for the cylinder heads. in the proximity of the pump. Where the'vvater pump is located intermediate the ends of the cylinder block appropriate adjustment may be made in the relative sizes of the effective openings 21 for the cylinders in proximity to pump and for those cylinders remote from the puinp'as Will be readily understood. I

What I claim as my invention isf 1. A- sleeve valve engine comprising in combination a' cylinder block having a jacketed cylinder; said block provided with openings on opposite sides 'o'fthe longitudinal plane ofthe engine incl'ud'ingfthe cylinder axis, a cylinder head member for the cylinder, and'acylinde'r head covern'iember, said cylinder head "member having a portion restricting at least one of said'o'pening's. v

, 2. An internal combustion engine of the sleeve valve type comprising in combination acylinder block having a plurality of engine Water jacketed cylinders, Water jacketed cylinder heads for the cylinders, said cylinder block having atop Wall provided with Water outlet means adjacent the cylinder heads along one side longitudinally of the cylinder block p'ermitting passage of water from the cylinder jacket to the cylinder head ackets, said top Wall having core op'enings therethrough longitudinally along the other side of said cylinder block, water outlet means for the cylinder head jackets along the last said sideof the cylinder block, and means carried by saidc'ylinder heads for closing the or portions of said core openings thereby restricting the passage of Water fron the cylinder jackct'to the cylinder head jacketsand to the said'cylinder head jacket outlet means for the most part to the said top Wall outlet means and thereby preventing the formation 01' steam pockets 1n the "cylinder jacket in the vicinity of said core openings. 3; An internal combustion engine of the sleeve valve type comprising incornbination a cylinder block haviiig "a plurality of en- "gine water jacketed 'cylin'ders,, Water jackete'd cylinder heads'for the cylinders, said water outlet means for the cylinder head openings therethrough longitudinally along the other side of said cylinder block, and

jackets along the last side of the cylinder block, said cylinder head provided With means overlying the major portion of said core openings thereby restricting the passage of Water from the cylinder jacket to the cylinder head jacket-s and to the said cylinder head jacket outlet means for the most part. to

the said top Wall outlet means and thereby preventingthe formation of steam pockets in the cylinder jacket in the vicinity of said core openings. 7 i

4-. In a circulatory cooling system for an internal combustion engine of the sleeve valve type, the combination of a cylinder, a head therefor, means providing a cooling space above said head, a cooling jacket about said cylinder having openings into said space arranged on opposite side of the longitudinal plane of the engine including the cylinder axis, and meanscarried by said cylinder head for closing theopening on one side of said plane sufficiently to cause the major por tion of the coolingmedium entering the said space to. pass through the opening on the other side of said plane but permitting the passage of gases through the first saidop ens 3. In a circulatory cooling system for an internal. combustion engine of the sleeve valve type, the combination of a cylinder, a head therefor, means providingea cooling space above said head, a cooling jacket about said cylinder having openings into sa1d space arranged on opposite sidesof the longitudinal plane of the engine including the cylinder axis, andmeans carried by said cylinder head for overlying the opening on one side of said plane sufficiently to cause the major portion of the cooling medium entering the said space to pass through the opening on the other side of said plane but permitting the passage of gases through the first said opening.

6. In a circulatory system for an lnternal combustion engine, a cylinder havinga surrounding cooling jacket with core openings at the upper end thereof on opposite sides of the longitudinal plane of the engine in cluding the cylinder axis, a cylinder head having a jacket portion depending in sa1d cylinder, a header, means carried by sa1d cylinder head for closing the core opening on one side of said plane sufliciently to restrict the fiow'of coolingcmedium from the cylinder jacket to the cylinder head jacket for the most part through the core opening of saidpljane;

ackets totthecy'linderhead chambers; icylinder; head ifmeans cooperating avith an opening in, the-proximityjof the ,pump to irestrict, the ;flu id flow therethrough relative t another, offsaid openingsnmoren'emote from 1 said pump, thereby" substantially onqthetother sideiof said-plane but gpermite tin-g passage; 50f gases :through a, the first said core opening anfli mloutlctifheader for 1:e

ceiving "the cooling-medium from the cylindenhead a'cket located on-the first said side -ot h .s ida l ah. a i

, :7 sleeve valve engine comprising; in combination, a cylinder -blo ck having a jack eted-cylinder, said block providedyvithopen ings, oncopposite -jsides OlfiythG longitudinal;

pla ofjthe :1 e gi n lu g he: cyli der;

der, a cylinder head cover member, cyl;- inder head provided 1 with, means for closing the major portion ofthe' v'openinglon one side .;-;8. A sleeve, valve engine comprising in combination a, cylinderblock having a jack,-

eted cylinder,sa-id block provided; with open-' ings on-opposite, sides of, the;longitudinal planetof the engine including the cylinder axis, a cylinder liead member for thecylinder, a cylinder head cover member, saidcylfaxis, a {cylinder head memberforithe cylinj inder head providedwith meansfo'rclosing the; opening on} one side, ofsaid plane'suflh ,cientlyto restrictthe majonifiow, of cooling medium to thecylinder head; member to the opening on the othertside of saidplanebut :leaving suiiicient' effective opening to prevent the formation of a steampocket ingthe vicinw- 113 9. A- sleeve iavalve engine comprising in combination'a cylinderblock having a plu} rality fof jacketed cylinders, said, block having an upper Wall; provided with fluid outlet openingsspaced longitudinally ofthe engine on -Lone side of the longitudinal plane the engine including the cylinderlax is cylinder head means for the: respective cyl nders receiving, cooling fluid, fromsaid openings,

cover means for the cylinder heads cooperating therewith to prov deicoohn g fluid chamher; for the, cylinderheads,,a pump; forcin- Lculating cooling fluid fron'r the, cylinder equalizing the flow of cooling 1 fluid. through the openings. -;10. A sleevejvalve engineconiprising. in

combination a a cylinder 1 block having a e phrality of jacketed cylinders, said Lblock-havhead means for the respective cylinders receiving cooling fluid from said openings, cover means for the cylinder heads'cooperating therewith to provide cooling fluid chambers for the cylinder heads, a pump for circulating cooling fluid from the cylinder jackaid L ets' to the cylinder head chambers, said cy1- inder head means provided with flanges seating onthe cylinder block and cooperating with an opening in the proximity of the pump to restrict the fluid flow therethrough relative to another of said openings more remote from said pump, thereby substantially equalizing the flow of cooling fluid through the openings.

1L A sleeve valve engine comprising in combination a cylinder block-having aplurality of jacketed Cylinders, "said block hav ing an upper wall provided with fluid outlet openings spaced longitudinally of the engine on one side of the lon itudinal lane of the engine including the cylinder axis, cylinder head means for the respective cylinders receiving cooling fluid from said openings,

cover means for the cylinder heads cooperat- 1 ing therewith to provide cooling'fluid chambers for the cylinderhea'ds', a pump for circulating cooling fluid from the cylinder jackets to tl'iecylinder head chambers, said cylinder head means provided with flange seating on the cylinder block and arranged to overlie one or more openings in proximity to the pump to a relative greater extent than those more remote from said pump,

thereby e ualizing the flow of cooling fluid through the openings.-

7 12. A sleeve valve engine comprising in combination a cylinder block having-a plurality of jacketed cylinders, said bloc-k having an upperwall provided with fiuid outlet openings spaced longitudinally ofthe engine on one side of the longitudinal plane of the engine including the cylinder axis, cylinder head means for the respective cylinders receiving cooling fluid from saidopenings,

cover means for the cylinder heads cooperat- 1 ing therewith to provide cooling fluid chamher for the cylinder heads, a pump for circulating cooling fluid from the cylinder jackets to the cylinder head chambers, said cylinder head means provided with flanges seating on the cylinder block and arranged to overlie said openings, the flanges carried by the cylinder head means in proximity to the pump arranged 'to overlie the opening associated therewith to a greater extent than the flanges ofth'e cylinder head means more remote from said pump overlie the opening associated therewith, thereby substantially "equalizing thefl'ow' of cooling fluid through the openings. 7 e V In testimony whereof I affix my signature.

ARCHIE MACPHAIL NIVEN. 

